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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 191 · 40 sums
TalentJR

The trick (Dwandwa Yoga): For abc: columns D(a) | D(ab) | D(abc) | D(bc) | D(c). D(a) = a², D(ab) = 2ab, D(abc) = 2ac + b², D(abcd) = 2ad + 2bc. Combine from the right with carries.

NameDateTime takenScore ___ / 40
  1. 1.818² =
  2. 2.988² =
  3. 3.864² =
  4. 4.452² =
  5. 5.7176² =
  6. 6.250² =
  7. 7.800² =
  8. 8.264² =
  9. 9.730² =
  10. 10.7986² =
  11. 11.470² =
  12. 12.6913² =
  13. 13.3879² =
  14. 14.328² =
  15. 15.472² =
  16. 16.741² =
  17. 17.848² =
  18. 18.721² =
  19. 19.580² =
  20. 20.372² =
  21. 21.696² =
  22. 22.827² =
  23. 23.890² =
  24. 24.660² =
  25. 25.450² =
  26. 26.275² =
  27. 27.3678² =
  28. 28.259² =
  29. 29.907² =
  30. 30.908² =
  31. 31.333² =
  32. 32.574² =
  33. 33.331² =
  34. 34.221² =
  35. 35.143² =
  36. 36.159² =
  37. 37.751² =
  38. 38.2459² =
  39. 39.741² =
  40. 40.236² =

Answer key

  1. 669124
  2. 976144
  3. 746496
  4. 204304
  5. 51494976
  6. 62500
  7. 640000
  8. 69696
  9. 532900
  10. 63776196
  11. 220900
  12. 47789569
  13. 15046641
  14. 107584
  15. 222784
  16. 549081
  17. 719104
  18. 519841
  19. 336400
  20. 138384
  21. 484416
  22. 683929
  23. 792100
  24. 435600
  25. 202500
  26. 75625
  27. 13527684
  28. 67081
  29. 822649
  30. 824464
  31. 110889
  32. 329476
  33. 109561
  34. 48841
  35. 20449
  36. 25281
  37. 564001
  38. 6046681
  39. 549081
  40. 55696

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